What we need is fairly simple:
Two or three variations of generic response to an order (ie, "Roger!", "Yes sir!", "Right away!")
Two or three variations of generic proclamation of arriving (ie "Hold this position!", "Awaiting further orders" etc)
Some vehicle variations of the above (ie "Vehicle in position" etc)
Two or three variations of generic 'selection', when units are selected (ie, "Yes sir?" "Ready for orders." "Yeah?")
Now as you will be acting, imagine that there is a gigantic person peering at you from the sky, giving you orders, and you are responding to him/her.
Actually, we probably also need all of that in American and "British" English as well.