| 100% | FOCH | 4 | French C-in-C of World War I |
| 78% | FOCH | 4 | Ferdinand —, French commander in chief of Allied armies on the Western front in World War I |
| 70% | ARGONNE | 7 | French forest that was the site of a World War I battle |
| 68% | BELLEAUWOOD | 11 | Battle of —, June 1918 conflict east of Paris in World War I |
| 65% | VIMYRIDGE | 9 | Battle of —, conflict in April, 1917 that saw a decisive Allied victory in World War I |
| 65% | MRSDALLOWAY | 11 | Virginia Woolf's novel about a day in the life of a woman in England post World War I: 2 wds. |
| 63% | GASMASK | 7 | Invention of World War I |
| 63% | FLANDERS | 8 | Powerful medieval principality in the SW part of the Low Countries; scene of many battles in World War I |
| 62% | BIGBERTHA | 9 | German cannon of World War I |
| 62% | YPRES | 5 | Belgian battle site of World War I |
| 61% | OFLAG | 5 | German prisoner-of-war camp for officers established in World War I |
| 61% | OFLAG | 5 | German prisoner-of-war camp for officers, established in World War I |
| 61% | BERTHA | 6 | Big __, German howitzer gun of World War I |
| 60% | YPRES | 5 | World War I battle site in Belgium |
| 59% | ACE | 3 | World War I flying ___ (Snoopy persona, in "Peanuts") |
| 59% | BERTHA | 6 | "Big" name in World War I |
| 59% | TINHATS | 7 | World War I metal helmets, in slang (2 wds.) |
| 59% | ACE | 3 | World War I flying ___ (one of Snoopy's personas) |
| 58% | YPRES | 5 | Belgian town destroyed in World War I |
| 58% | STALAG | 6 | German prison camp in World War I |
| 58% | SPY | 3 | Mata Hari was one in World War I |
| 58% | UBOAT | 5 | German submarine in World Wars I and II |
| 57% | LUSITANIA | 9 | British ship sunk by Germans in World War I |
| 57% | UBOAT | 5 | German submarine in World Wars I and II: Hyph. |
| 56% | CHOCTAW | 7 | Tribe that served as code talkers in World War I |
| 56% | LUSITANIA | 9 | Its destruction marked a turning point in World War I |
| 56% | MATAHARI | 8 | Dancer executed as a German spy in World War I |
| 56% | ARMS | 4 | "A Farewell to ___" (Hemingway novel set in World War I) |
| 55% | AIRMAN | 6 | Part of a Tuskegee-trained force in the Second World War |
| 55% | FAREWELL | 8 | "A ___ to Arms," novel by Ernest Hemingway set during the Italian campaign of World War I |