At 4:40 I was thinking: jam your lieut into his colonel, Then pick that colonel up with your marshal. Your marshal is kinda exposed anyway. Coulñd have done it at 4:59 as well. You are up vs a platinum and picking up a colonel is a good thing. After that you can retreat and support your known colonel wiht the marshal. No idea if that would have been a good play.
7:51 Aha you got it anyway without saccing the lieut. He could have dodged your marsh if he had read the position correctly though.
10:23 I'm hitting now with my captain
15 excellent work with your marshal
20:50. Good. But I think you must either choose to trap that escaping piece with colonel or marshal or if you think it is worse than a lieutenant, attack that piece in front of your captain.
24:00 Running in with miners is not is good idea. Just hit that major and exploit your material advantage to get rid of all his moving pieces. You have captain+colonel+marshal vs marshal alone
36:00 Time to bring out your lieutenant.
40:00 Bring out your lieut!
46:00 What are you doing? You need to use that spy to force trade marshals, you only have one miner left. If you lose your spy, you need to start guessing where his bombs and moving pieces are. If you force off his marshal it is gg.
48:00 careful now and protect flag, he still has a scout
49:00 now you are potentially throwing away the game if one of his left pieces is the scout.