As far as military the USSR with around 6 million. Civilian China, with 7 million.
I'm assuming you mean Belgium. If you specify who the occuppier was, I could be sure.
The casualties during the Siege of Leningrad is estimatedat 1.5 million , both civilian and military .
Russia suffered the greatest number of casualties during World War I, with estimates of military and civilian deaths ranging from 3 to 4 million. The Russian Empire faced immense losses due to battles on the Eastern Front, civil unrest, and famine exacerbated by the war. These casualties significantly impacted the country's social and political landscape, contributing to the Russian Revolution in 1917.
During the Battle of Iwo Jima, which took place from February 19 to March 26, 1945, there were an estimated 18,000 to 20,000 Japanese military personnel and around 216 civilian casualties. The civilian casualties primarily resulted from the island's civilian population being caught in the crossfire of the intense combat. The battle was marked by fierce fighting and significant loss of life on both sides.
Russia
I'm assuming you mean Belgium. If you specify who the occuppier was, I could be sure.
The casualties during the Siege of Leningrad is estimatedat 1.5 million , both civilian and military .
Russia suffered the greatest loss of life during World War I. There were thousands of casualties on all sides suffered during the war.
The Federals suffered 42,000 casualties, the Confederate 28,000.
During World War 2, the Allied forces saw over 61 million casualties counting military and civilian. The Axis forces saw over 12 million casualties.
more allies died in ww1. i am not exactly sure why. there is a breakdown of casualties on wikipedia.
Russia
7 civilian casualties
Prior to the development of antibiotics during World War 2 the biggest reason for the huge casualties suffered by armies during battles was infections of wounds and other battlefield injuries.
It is a casualty (casualties ;. plural)
Russia, suffering approximately 22 million deaths, civilian and military, almost 15% of their total population.
The USS Maryland suffered a total of 4 casualties during the attack on Pearl Harbor.