Meanings of mechanized infantry in English

Also, I was a fish out of water when it came to mechanized infantry.

My final assignment was to be an advisor to a National Guard mechanized infantry battalion.

To which even the mechanized infantry replied, en masse.

A mechanized infantry company retains the same basic organization, but each squad is carried in two lightweight counter-grav-equipped infantry fighting vehicles.

My brigade commander also was not a happy camper when, without explanation, he received the news that I was history with the mechanized infantry battalion.

The First Mechanized Infantry had marched up the concrete ramp.

Other than its fellow members in the First Mechanized Infantry, Unit 001 had never seen other Cylons.