The Soviet Union 's participation in World War II began with the Battle of Khalkhin Gol, with Japan in Mongolia in 1939. Later that year, protected with the Molotov-Ribbentrop Pact, it invaded eastern Poland about three weeks after the Germans invaded the west of the country.he Soviet Union 's participation in World War II began with the Battle of Khalkhin Gol, with Japan in Mongolia in 1939. Later that year, protected with the Molotov-Ribbentrop Pact, it invaded eastern Poland about three weeks after the Germans invaded the west of the country.
An altimeter does not actually measure altitude directly, but rather just atmospheric pressure. So an altimeter is actually a barometer created for a specific purpose. The altimeter uses the changes in atmospheric pressure to determine the changes in altitude.
An altimeter will only read correctly under conditions for which it is calibrated temperature; Standard Atmospheric Conditions which assumes a temperature lapse rate of 1.98oC for every 1000ft increase in altitude and a sea level pressure of 1013.25 hPa. In this case an altimeter will show the pressure altitude.