"It happened in the springtime." This introduces a new event in the storyline. (See: [[rc://en/ta/man/translate/writing-newevent]])
# at the time
"at the time of year"
# David sent out Joab, his servants, and all the army of Israel
David sent them out to war. This can be stated clearly. Also, the word "his" refers to David. AT: "David sent Joab, his servants, and all the army of Israel to war" (See: [[rc://en/ta/man/translate/figs-explicit]])