On the day of the coup, the commanders of Argentina's key naval bases (including 68 active-duty officers) declared their support for the coup, including those of
Puerto Belgrano,
Mar Del Plata,
Rio Santiago Shipyard and
Punta Indio. The Naval Headquarters and
Navy Mechanics School, as well as a radio station in
Buenos Aires were immediately seized. Around Puerto Belgrano, base commander Admiral Jorge Palma used the threat of the numerically superior
marine force under his command to compel the surrender of the Army's 5th Infantry Regiment. Support in the Air Force for the coup was limited to 13 active-duty officers in the bases at Aeroparque, Reconquista, and Mar del Plata, all of which swiftly fell back into loyalist control. The rebel-held radio station in Buenos Aires was promptly bombed by loyalist
MS.760 aircraft. At least 129 active-duty Army officers also expressed support for the coup, including the commanders of several large units, but the majority of them were stationed far from the capital, and all of the rebel army units surrendered within two days. Loyal army troops stationed in
Campo de Mayo were quickly mobilized to seize the radio station, Naval Headquarters, and
Aeroparque in Buenos Aires. The leaders of the revolt, accompanied by marine infantry, fled by ship to
Puerto Belgrano. On 3 April, Army units moved onto retake the naval installations at
La Plata and
Rio Santiago, whose personnel had also fled to Puerto Belgrano. (22 September 1962) At 8 am on 3 April, the Air Force retaliated. A squad of
F-86 Sabres,
Gloster Meteors and
MS.760s launched air strikes against the naval base, destroying five Navy aircraft on the ground. The 8th Tank Regiment subsequently occupied Punta Indio only to find it abandoned, its personnel having fled to
Uruguay, leaving behind five seamen and four wounded.
Surrender of the revolt Meanwhile, the army had encircled the remaining rebel stronghold of Puerto Belgrano with rapidly mobilized troops from the 6th Mountain Infantry Division. Wishing to avoid a
civil war, Admiral Palma offered to surrender and bring an end to hostilities under the condition that Puerto Belgrano not be occupied and that the Navy be allowed to keep its Marine and Aviation branches. This was agreed to by the Secretaries of the Army and Air Force, and the newly appointed secretary of the navy, Admiral Eladio Vazquez (former commander of the Sea Fleet, who had not declared his support for the coup), and President Guido. However, General
Juan Carlos Onganía initially refused to call off the troops attacking Puerto Belgrano, and was only persuaded to submit to civilian rule following a personal conference with President Guido. == Aftermath ==