The Campaigns of Samudragupta were a series of military campaigns led by Gupta emperor Samudragupta in the mid to late 4th century CE throughout the various parts of the present-day South Asia. The campaigns resulted in the unification of the Ganges valley and the fall of several independent kingdoms, republics and tribes to the Gupta realm.
Samudragupta's Allahabad Prashasti records his campaigns in detail, said to have been written by Harisena. Samudragupta first launched his First Āryāvarta Campaign against the local rulers of the Ganga valley and completely uprooted them, the states of Achyuta, Ganapati Naga and Nagasena suffered the cause. The ruler of Kota dynasty was captured by the army of Samudragupta and was forced to accept the Gupta suzerainty.
Samudragupta after consolidating his power in the Ganga valley, moved to suppress the Southern Kings, who were captured, liberated and reinstalled back to their thrones. Samudragupta in the Dakshinpatha campaign, defeated 11 kings of South India, and annexed them into Gupta Empire as tributary states.
After finishing off with his Dakshinpatha campaign, Samudragupta launched his final campaign of Āryāvarta, where he defeated 9 kings and annexed them into Gupta Empire under direct administration. Thus,a 'war of extermination' against the Aryavarta kings was started by Samudragupta which was violent and bloody.
By the end of his reign, Samudragupta was able to gain control over almost whole of the Indian subcontinent, extending from modern day Punjab in the west to Assam in the east and from the foothills of Himalayas in the north to the Vindhyas in the south with the allegiance of Southern Kings along the eastern coast of India.
Aims of Samudragupta's Campaigns
Various Scholars have interpreted the objectives and aims of Samuragupta's campaigns differently, many nationalist scholars relate it to religious ideas while more liberal scholars view it due to economic reasons.
Liberal views Buddha Prakash states that, the Dakshinpatha campaign was led under economic considerations, as the demand of trade and commerce between India and Southeast Asia was rising, it became important for Samudragupta to secure few ports for the Empire.
Nationalist views According to SR Goyel, Samudragupta was inspired by the Hindu ideals of Universal Ruler which was very popular during the Gupta age. According to BG Gokhale, the reason might have been religious. Samudragupta might have been influenced from the Nāgas performing the Vedic Ashvamedha Sacrifice, and he sought to perform it after his victory over Nagas.
Moreover, Tej Ram Sharma concludes that, Samudragupta was eager to conquer lands of Bharatvarsha and to be the 'Universal Monarch' after completing the Ashwamedha Sacrifice which is even evident from his coinage.
First North Indian Campaign
Unification of Ganges Valley
The kingdom of Chandragupta I consisted of the parts of modern-day Bihar and Uttar Pradesh, despite this he adopted the title of Maharajadhiraja. He must have some sort of control over the Naga kings. By his death the Naga Kings, Achyuta, Ganapati Naga and Nagasena, broke off from the Gupta realm and established their own kingdoms. Achyuta is identified as the ruler of Ahichchatra (modern day Bareilly), Nagasena to be the ruler of Padmavati (Gwalior) and Ganapati Naga to be the ruler of Mathura. Samudragupta suppressed their revolts by the use of military scientists operated on the inner lines. The kings submitted to him seeking for Samudragupta's forgiveness.
Another ruler from the Kota dynasty tried to break off from the Gupta realm. The Kota ruler is identified as the ruler of Punjab region. The coins bearing the Legend kota and Shiva with his Bull has been found in various places such as Ludhiana, Sunet and Sanghol. Giving less importance to the revolt, Samudragupta divided the Imperial army and sent one of his general to defeat and punish the Kota ruler while he was campaigning against the Nāga rulers. The Kota ruler was then defeated and captured.
Thus, they were the first to fall in his conquests, which extended Gupta rule far beyond Prayaga and Saketa, reaching the areas around Mathura and Padmavati. It is also cleverly suggested that this battle against the rebellious princes took place at Kausambi, where Samudragupta used the Ashoka pillar as a symbol of his victory.
South Indian Campaign After establishing his power in the surrounding areas, Samudragupta launched his South Indian Campaign. The campaign had three features, namely capture of the enemy, liberating them, and reinstalling them back.
Route of the Campaign Samudragupta's military campaign in the South primarily focused on the eastern Deccan region along the Bay of Bengal's coast. He began by moving through the forest areas of Madhya Pradesh and proceeded to the Orissa coast. From there, he advanced through the regions of Ganjam, Vizagapatam, Godavari, Krishna, and Nellore, eventually reaching Kanchi (modern-day Kanchipuram) south of present-day Chennai.
There is a theory by Fleet and some scholars suggesting that during his return journey, Samudragupta also conquered kingdoms on the western coast of India. However, evidence from historical inscriptions challenges this view. For example, the inscription mentions Kaurala, identified as Keralaputra (linked to the Chera kingdom of Southern India), and Kottura, identified with a place in Coimbatore. Palakka is equated with Palaghat on the Malabar coast, while Erandapalla is linked to Erandol in the Khandesh district, and Devarashtra is associated with Maharashtra. The sequence of conquests listed in the inscription, however, indicates that Samudragupta's campaign moved steadily southward. The names of regions like Erandapalla and Devarashtra would logically appear after southernmost areas like Vengi and Kanchi if they were actually part of his campaign. Thus, it seems unlikely that he would have turned back to the south after conquering western regions. Instead, the evidence supports the idea that his southern expedition ended at Kanchi, without extending further into western territories like Maharashtra.
Mahendra of Kosala The route of Samudragupta's southern campaign can be traced based on the sequence of events recorded in his inscriptions. Leaving the Jumna Valley, he likely advanced through the present-day regions of Rewa and Jabalpur, reaching his first target: the kingdom of Kosala. This kingdom, known as Southern Kosala, had its capital at Sripura (modern-day Sirpur in Central Province). It encompassed the eastern and southern areas of the Central Province, covering the modern districts of Bilaspur, Raipur, Sambalpur, and parts of Ganjam. The ruler of Kosala at the time was King Mahendra.
Vyagharaja of Mahakantara Samudragupta then entered the dense Vindhyan wilderness of eastern Gondwana, known as Mahakantara. Its ruler, Vyaghraja—aptly called the "Tiger of the Forest"—was a notable leader and a feudatory of the Vakatakas. Vyaghraja had a son, Jayanatha of the Uchchakalpa dynasty, who is recorded in the year 174 of the Kalachuri era, indicating he was a contemporary of Chandragupta II, and thus, Vyaghraja was a contemporary of Samudragupta. The region's likely capital was Sambalpur on the Mahanadi River.
Mantraja of Kurala J.F. Fleet initially suggested that "Kaurālaka," mentioned in Samudragupta's inscriptions, could be a mistake for "Kairalaka," referring to Kerala on India's western coast, possibly due to the unfamiliarity of the name. Others offered varying theories: L.D. Barnet associated it with Korada, while S.K. Aiyangar proposed a location near present-day Khurda in Odisha's Cuttack district. Kielhorn, while studying the Aihole inscription of Pulakesin II, suggested that "Kaurala" (or "Kunala") was likely near the Kollar Lake region between the Godavari and Krishna rivers, a view later accepted by Jayaswal. However, H.C. Raychaudhuri argued that this region would have fallen within the boundaries of Vengi, ruled by Hastivarman. R. Sathianathier proposed an alternative identification with Cherla in Nagpur Taluk of the East Godavari district, but this area, too, was likely within Hastivarman's territory. G. Ramdas speculated it to be the plains northeast of the Mahendra Hills, aligning with the sequence in Samudragupta's inscription. B.V. Krishnarao suggested "Kaurala" might refer to "Kulula," as mentioned in the Mahendragiri pillar inscription of Chola king Rajendra Chola I, situated south of the Maikal range in Madhya Pradesh's Chanda district. However, this location was considered too far north. A recent discovery offers a promising solution: a copper plate grant of Maharaja Narendra from the Sarbhapuriya dynasty of South Kosala references a region called "Mantrarajabhukti," likely named after a ruler called Mantraraja, who may correspond to the "Mantraraja" in Samudragupta's inscriptions. This evidence suggests that the kingdom of "Kurala" was near South Kosala, clarifying its probable location.
Mahendragiri of Pishtpura There has been some debate over the correct name of the ruler of Pishtapura. J.F. Fleet argued that a name ending in "giri" was unlikely to be a king's name, as such endings were commonly associated with the Dasanami Gosains, a sect of recluses. Fleet therefore interpreted the ruler's name as simply "Mahendra," with "giri" linked to the following place name, "Kottura," translating it to mean "Kottura on the hill." However, D.R. Bhandarkar countered that this interpretation was grammatically flawed. V.S. Ramachandramurti further noted that several rulers in the Telugu region indeed had names ending in "giri" or its equivalent, "adri," validating "Mahendragiri" as a plausible royal name. Pishtapura, identified as present-day Pithapuram, lies 12 miles from Kakinada in Andhra Pradesh's East Godavari district. This inscription provides the earliest recorded mention of Pishtapura, described in the Ragolu plates of King Vasishthiputra Shaktivarman as a city within the Kalinga territory. It is also referenced in inscriptions of King Anantavarman of Kalinga. In the early 7th century, shortly before 634–635 CE, the Chalukya ruler Pulakesin II conquered Pishtapura and incorporated it into his kingdom.
Svamidatta of Kottura After conquering Pishtapura, Samudragupta turned his attention to Kottura, ruled by King Svamidatta. Kottura is identified as either modern Kothoor in the Ganjam district or as a location at the base of the hills in the Vizagapatam (now Visakhapatnam) district.
Damana of Erandapalla The location of Erandapalla is essential to defining the southern reach of Samudragupta's campaign. J.F. Fleet identified it with Erandol in East Khandesh, Maharashtra, supported by Gupta-era remains found there. However, Dubreuil disagreed, proposing Erandapali near Srikakulam (Chicacole) based on references in the Siddhantam plates issued by Ganga king Devendravarman, which mention a place named Erandapalli. G. Ramdas offered a different perspective, suggesting either Yendipalli in Golgonda Taluk, Visakhapatnam district, or Endipalli in Ellora Taluka, West Godavari district. He argued that Erandapalli's kingdom likely spanned from the northern boundary of Golgonda Taluk down to Ellore. An "Eradavishaya" appears in the Nagadam plates of Ganga king Vajrahasta (dated to Saka year 979), though it is spelled with a dental "d" rather than the cerebral "d" seen in the Allahabad Pillar inscription. Jayaswal also placed Erandapalli in Kalinga, near Kalinganagara (Mukhalingam) in Ganjam district, suggesting it was under Svamidatta of Pishtapura, with Damana of Erandapalli serving as a local ruler. Ramdas's view, proposing Erandapalli's kingdom stretched from northern Golgonda to Ellore, is widely regarded as the most plausible identification.
Vishnugopa of Kanchi