Operation S.U.M.M.E.R. refers to the annual event War Thunder that typically runs from the span of July to August. In this event, players play to complete tasks to earn "Marks of Distinction". Earning enough Marks of Distinctions would earn the players prizes, usually consisting of decals, decorations, and even rare vehicles.
The event is overall very similar to the Chronicles of WWII event, with the completion of certain tasks to obtain a "medal", and collecting enough medals to obtain rare vehicles, boosters, and other items.
- 2016: Operation S.U.M.M.E.R. (22 July - 22 August)
- 2017: Operation S.U.M.M.E.R. (28 July - 28 August)
- 2018 pt.1: Operation S.U.M.M.E.R.: Assemble a tank! (21 July - 06 August)
- 2018 pt.2: Good Old S.U.M.M.E.R (17 August - 06 September)
- 2019: Operation H.E.A.T. (2 August - 26 August)
- 2020: Operation S.U.M.M.E.R. 2020 (7 August - 31 August)