The military has wielded huge political power in the country, overthrowing four governments between 1960 and 1997 and issuing a warning against Prime Minister Recep Tayyip Erdogan's Islamic-rooted government as recently as 2007.
The generals have in the past pointed to an internal military regulation that stipulated the army's duty as watching over and protecting the Turkish republic, to justify army takeovers or stepping in whenever they felt uneasy over civilian leaders' policies.
They also emphasized the Turkish army's role in international peacekeeping missions, saying its tasks also included taking up any overseas duty assigned by parliament and helping secure international peace.
Erdogan's party proposed the amendment to strip the military of any legal basis for intervention in domestic affairs following a spate of anti-government protests in June, which the prime minister has blamed on a conspiracy against his democratically-elected government.
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The protesters were airing discontent with what opponents have said is Erdogan's increasingly authoritarian style of governing and moves to impose his conservative and religious views on society.
"This is an important legal reform that ends any legal justification for staging coups," Lale Kemal, an expert on military affairs and columnist for Today's Zaman newspaper, said of the amendment.
However, further reforms were needed to assert full civilian control over the military, including placing the armed forces under the defense ministry's subordination and opening up military spending to greater civilian scrutiny, Kemal said.
Since coming to power in 2003, Erdogan has reduced the general's powers through reforms driven by Turkey's ambition to join the European Union, including for example, reducing the influence of a national security council where the generals usually imposed their will on the government.