LIST OF WARS: DETAILS
Greece Civil War
Battle deaths: 154,000 
Nation(s) involved and/or conflict territory [note]
The war had two phases. In the first phase (1944-45), the left-wing resistance movement, which had control of most of Greece, was confronted by the returning Greek government in exile, which had been formed under the auspices of the British in Cairo. In the second phase (1946-49), a right-wing government, elected under abnormal conditions, fought against armed forces controlled by the Communist Party of Greece. The civil war left Greece with severe economic problems and a legacy of political division which lasted until the 1970s.
Source: Wikipedia, published under the GNU FDL. Retrieved [dat]
SOURCES: FATALITY DATA
 Battle deaths: PRIO Battle Deaths Dataset v3.0 (link) (1946-88) ID: #4
Low: 24,000 High: 160,000
NOTE ON NATION DATA
NOTE! Nation data for this war may be inconlusive or incomplete. In most cases it reflects which nations were involved with troops in this war, but in some it may instead reflect the contested territory.
Advertisment is a distraction, we know, but it helps us pay our ISP.