15,200 troops (2015 est.)
List of major deployment:
Army
The Royal Saudi Arabian Armed Forces (Arabic: القُوّات المُسَـلَّحَة السُّـعُوديَّة, translit. al-Quwwāt al-Musallaḥah as-Suʿūdiyyah) consists of the Saudi Arabian Army, the Royal Saudi Air Force, the Royal Saudi Navy, the Royal Saudi Air Defense, and the Royal Saudi Strategic Missile Force.
In addition the Saudi Arabian National Guard (SANG), which is one of the three major branches of the Joint Forces of the Kingdom. The national guard is under the administrative control of the Ministry of National Guard, instead of the Ministry of Defence, the Saudi Arabian Royal Guard, and paramilitary forces.
The Kingdom of Saudi Arabia has one of the best-funded defence forces in the Middle East. The kingdom spends 25% of its budget, or about $88 billion, on its military. In terms of manpower, Saudi Arabia has about 688,000 active personnel in its military, with 300,000 army troops.Saudi Arabia also has more than 200,000 men in its national guard and 25,000 tribal levies, which is used primarily to secure internal threats but has been used as an expeditionary force too. The navy has about 60,000 members,air defense forces and strategic rocket forces about 40,000 soldiers. In addition to the air forces with more than 63,000 active employees, also there is a military intelligence service, the General Intelligence Presidency (GIP).