1945-1991: Cold War world Wiki
Douglas A-4 AKA-Douglas O-2
Category. Statistic.
First flight on. 1924.
Retired on. Shortly after WW2 in the USA and Mexico. In the early 1950s in the PRC and Taiwan.
Major contractor(s)  Douglas Aircraft Company.
Dose it use nukes or cruse missiles. No.
Fight ceiling.   16,279 ft (4,960 m).
Top speed. 128 mph (206 km/h).
Range. 360 mi (579 km).
Crew, including instructor(s). 2 (1 pupil and 1 instructor in the training variant)
Nationality(s). American.
Class. Trainer\observation\drone.
Rate of climb. 807 ft/min (246 m/min).
Links. https://en.wikipedia.org/wiki/Douglas_O-2, http://www.historyofwar.org/articles/weapons_douglas_O-2.html, https://pediaview.com/openpedia/Douglas_O-2 and http://www.aero-web.org/specs/douglas/dou-o-2h.htm

A Douglas O-2H observation plane at the NACA Langley Research Center at Hampton, Virgingia (USA), on 10 January 1934. It arrived at Langley on New Year's Day 1929 for evaluation by the NACA. Used for stability tests, pressure distribution tests and other work, the O-2H was retained until 1935. Date: 10 January 1934. Source: NASA.