Wiktionary
n. infantry which is transported on mounts (e.g. horses) but fights on foot.
Wikipedia
Mounted infantry were infantry who rode horses instead of marching, but, as infantry does in general, fought on foot (in the modern era with muskets or rifles, but before that with swords, spears, bows, or crossbows). In contrast, cavalry fought on horseback. The original dragoons were essentially mounted infantry. According to the 1911 Encyclopædia Britannica, "Mounted rifles are half cavalry, mounted infantry merely specially mobile infantry." Today, with motor vehicles having replaced horses for military transport, the motorized infantry are in some respects successors to mounted infantry.
Usage examples of "mounted infantry".
Five minutes of 155-mm fire and a remorseless advance by the Bradleys, spitting fire from their chain guns and through the firing ports for the mounted infantry inside, made them look like fire-breathing dragons, and these dragons were not a sign of good luck for the Chinese soldiers.
Lanrezac understood him to say he intended employing it as mounted infantry in the line, a contemptible form of activity which the hero of Kimberley would as soon have used as a dry-fly fisherman would use live bait.
Fencing Master continued to rumble on, twenty meters behind the screen of skimmer-mounted infantry.
Together with the fire from the mounted infantry, a 30mm cannon, and a 7.
Three times the regiment had run this exercise, simulating a frontal assault of tanks and mounted infantry against an enemy of equal strength.
An army by itself too large for him to deal with, reportedly a full legion of cavalry and another of mounted infantry.
A number of Legions were converted to specialist mounted infantry, mountain or other configurations.
She was escorted by Marines, a section of mounted infantry with their rifles at their knees.
Unlikely that the Royalist force would be able to catch the guerrillas, if the insurgents abandoned their heavy equipment, although he had brought enough horses to equip a substantial force of mounted infantry in that event.
Dragoons were supposed to be mounted infantry and so they were issued with carbines, short-barrelled muskets, with which they could fight on foot, and some carried the carbines while others preferred to attack with their long straight swords, but all of them instinctively ran toward the track which climbed among the vines.