Combat boot. Combat boots are military boots designed to be worn by soldiers during combat or combat training, as opposed to during parades and other ceremonial duties. Modern combat boots are designed to provide a combination of grip, ankle stability, and foot protection suitable for a rugged environment.
In our earthly life, a lost soul is someone who has no direction in their life, no apparent purpose. They have many acquaintances but few friends. Those who do know this person think them a little strange, or socially awkward. Perhaps some of them are psychopaths, people who lack empathy.
dark night of the soul. n. 1. [Rel.] expression used to describe metaphorically a period of ignorance and spiritual crisis that precedes the communion with Divinity; 2. in a larger meaning, it is used when refering to having a hard time, going through a phase of pessimism, sadness, failure etc.