21 June 1944
Soviet 7th Army begins its offensive across River Svir. Finnish positions around Lotinapelto and Ohtajärvi can't hold, and the order is given for all 5th Division troops to begin withdrawing to the Enemajoki-Karjala line. Eighth Division is ordered to withdraw from the south side of the river.
7th Army's attack across Svir.
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STAVKA orders the Karelian offensive to reach the Imatra-Lappeenranta line on the Finnish border by 28 June.
Situation on the Karelian Isthmus.
Finnish daily losses: 322