I'm not the one to speak (others with more experience have offered good constructive criticism), but one thing I definately would've done was clear the area before you started on the main trunk. Too easy to trip over something & get hurt, especially when you're not using the chain brake when walking around with the saw, & even with it idling on the ground. Not to mention having a clear escape route.
Take care of yourself, soldier.
He is not just a soldier,,,,!!!!!!! he is a Warrior!!!!!!!!
Yep,,,, get the dual port,,,, retune the carb,,,and like Brad said,,, sharpen the chain!!!!!!!
Use the Chainbrake when moving,,,, as peter suggested open your face cut angle a bit and use 1/3 diameter notch rule for the depth of the face cut,,,,
and as Roland said do not stay with the stump,,,, ever,,,,, even if you have a rope on it,,,,,, plan your exit before you bring in the back cut and use it everytime!!!!!,,, also use two inch minimum rule for the back cut height,,, over the horizontal face cut,,,2" above,,,,, the bigger the tree go even higher,,,,, this insures the spar will have some stump shot to keep the spar moving forward as it commits to the fall
If you want,,,,, send me your saw just before you leave and I will remove your limiter caps & tune it with a dual port,,,, and sharpen your chain so it will sling chips like this,,,,