A given AI team mate will be selected in an effort to rearm them (single player) by pressing f2 etc. Then I press 6. Numerous options for rifles of the same type are displayed. Often, after being instructed to "take Katiba" they will run off a half mile to get a rifle passed ten minutes earlier when there is one laying right in front of them. Then, after getting the rifle they fail to grab ammo.
Medics are shot and do not treat themselves. They do not attend to other squad mates without instruction even after out of danger.
Side note: They sound like Kermit the frog when yelling "understood."