When Col.Henry Blake was at the helm,1)where he sided with Hawkeye and Trapper and not with Margaret and Frank(I bet if there was,Frank and Margaret were not too happy about him doing that)and 2)Were there any episodes where he called Hawkeye and Trapper by their first names?

Of course, he sided with Hawkeye being named chief surgeon over Frank. I know it wasn't Hawkeyes idea however he made his decision as Frank was complaining about Hawkeyes ER reputation. That was a great episode.

1. Henry sided with Hawkey and Trapper a few times.

2. Henry never referred to Hawk & Trap by their first names. In fact, it is a strict rule that military personal are specifically not allowed to address each other by their first name while on duty. That's why it was considered a funny joke when Hawk and Trap always referred to Henry, Frank, and others by their first names. That just doesn't happen in the military, even with a bunch of non regular Army draftees.