# in shifts

That is, there were three groups that took turns spending one month in Lebanon and two months at home.

# One month they were in Lebanon and two months at home

Each of the three groups spent one month working in Lebanon and then two months at home in Israel.

# the men who were subjected to forced labor

This can be translated in active form. Alternate translation: "the men whom Solomon was forcing to work for him" (See: [[rc://en/ta/man/translate/figs-activepassive]])