The Northeast Holds the Line: Saraighat

Battle of Saraighat, 1671 — fought on and around the Brahmaputra river near modern Guwahati, this battle pitted the Ahom Kingdom of Assam against a Mughal invasion force sent by Aurangzeb and nominally led by the Rajput commander Raja Ram Singh I of Amber. The Ahoms, though facing a numerically and technologically superior Mughal force with a strong naval flotilla, were commanded by the general Lachit Borphukan, who exploited his intimate knowledge of the region's river channels, tides, and terrain — famously continuing to direct the defence even while gravely ill, and, according to popular tradition, beheading his own maternal uncle for dereliction of duty in fortifying a key embankment, to enforce discipline among his own commanders. Using a combination of guerrilla tactics, a decoy retreat that drew the Mughal fleet into a disadvantageous position, and a coordinated naval counterattack, the Ahoms destroyed a large part of the Mughal fleet and forced Ram Singh's army to retreat from Assam altogether. Saraighat effectively ended Mughal attempts to permanently conquer Assam, and it stands today as the most commonly tested battle from Northeast Indian history — Lachit Borphukan is honoured in independent India through the Lachit Borphukan National Award, given annually by the Indian Army's National Defence Academy to its best all-round cadet, a fact examiners like to pair with the battle itself.

Memory hook — "Saraighat: the river fought for Assam." Unlike almost every other battle in this book, the decisive factor here was naval and tidal, not cavalry or artillery — remember Lachit Borphukan as the general who turned the Brahmaputra itself into a weapon.

Practice Recall: Which Mughal emperor sent the invasion force to Saraighat, who actually commanded it in the field, and who defeated it? ... Answer: sent by Aurangzeb, led by Raja Ram Singh I of Amber, defeated by Lachit Borphukan of the Ahoms.