Getting Up Early
If a former soldier says that they slept in, they likely mean that they woke up at 7 am. Getting up early stems from basic training. Then, they continue to have the habit on deployment and it kind of sticks forever.
Popping Smoke
Just like what you see in films, soldiers “pop smoke” in order to create a shield or diversion. They do this to be able to move into position. If a soldier is not in the military and says that they’re “popping smoke”, they usually mean they’re leaving.