Giannis Antetokounmpo, Thanasis Antetokounmpo

The Brothers Antetokounmpo have traded in their NBA jerseys for a different kind of uniform this summer: military fatigues. Giannis, and Thanasis, who play for the NBA's Milwaukee Bucks and D-League's Westchester Knicks, respectively, started their mandatory Greek military service on Wednesday at an armor training center, according to Naftemporiki.

By Greek law, any citizen who permanently lives abroad has to complete a three-month term with the Greek military.

However, because the Antetokounmpos are professional athletes, they may not have to fulfill the entire three-month stint, per’s Jay Sorgi. Abbreviated terms would allow the brothers to prepare for the upcoming NBA season without missing any team workouts.

In 80 games for the Bucks last season, Giannis, "The Greek Freak," averaged 16.9 points, 7.7 rebounds, and 4.3 assists, while Thanasis averaged nearly 10.9 points for the Knicks’ D-League squad. Thanasis played two NBA games for New York and averaged 3.0 points.

More NBA:
-- It's Official: LeBron Will Star In 'Space Jam 2'
-- LeBron: 'My Sons Won't Play Football'
-- Kevin Durant On Shoe Line: 'I'm Not A $88 Player'