Ichinotani (Taira War).
Fought 1189, between the troops of the Shogun Minamoto-no-Yoritomo, under his brothers Norigoris and Yoshitsune, and the forces of the Taira clan. The Taira were signally defeated.
Iclistavisus (Germanic Wars).
Fought 16, between 8 Roman legions, under Germanicus, and the Germans, under Arminius. The Germans attacked the Romans in the open plain, but failed against the superior discipline of the legionaries, and were routed with enormous loss. Arminius with difficulty cut his way out of the press and escaped.
Immac (Revolt of Elagabalus).
Fought June 7, 218, between the Syrian legions, under Elagabalus, and the Imperial troops and Pretorians, under the Emperor Macrinus. The Pretorians, by their superior valour and discipline, broke the legions opposed, and the victory would have been theirs, but at the crisis of the fight, Macrinus fled, and this so discouraged his troops, that in the end they were totally defeated.
Imola (Napoleon's Italian Campaigns).
Fought February 3, 1797, when 8,000 French and Italians, under Victor, defeated the Papal troops, 7,000 strong, under General Colli. Victor took the Papal army in the rear, and routed them with a loss of a few hundred only, as no stand was made.
Indus, The (Tartar Invasion of Kharismia).
Fought A.D.[A.D.] 1221, between 300,000 Tartars, under Genghis Khan, and the army of Jellalladin, Sultan of Kharismia, 30,000 strong. Jellalladin fought with his back to the river, and after an obstinate conflict, in which he inflicted heavy loss on his assailants, was driven across the Indus, having lost 19,000 men killed and drowned. The Tartars lost 20,000.