proceed, get, become, tend
赴 centers on moving toward a destination or state: proceeding to a place, getting into a condition, or tending toward an outcome.
赴 combines 走 (run) with 卜, which likely contributes the sound and may have originally suggested a sense of urgency or direction. The exact historical role of 卜 is uncertain.
The running enclosure 走 suggests movement, and the simple inner mark 卜 looks like a directional sign. Picture running toward a signpost: you proceed, get there, and tend toward your goal.
For フ, imagine you are in a hurry to proceed, so you run and huff: huff -> フ, as you rush toward your destination.
moving to a different location to start a new job; (proceeding to) new appointment
to go in the direction of; to proceed toward; to proceed according to; to repair to; to betake oneself to
taking up a post away from one's family; job transfer without one's family; living apart from one's family for the sake of one's job; unaccompanied posting
employee posted away from their family
to improve; to get better; to convalesce
overseas assignment; overseas posting
to grow in prosperity
place of (new) post; (new) place of appointment
going to save; reinforcing (e.g. troops)