Situated in Longuenesse, France, Longuenesse (St Omer) Cemetery serves as a poignant reminder of the sacrifices made during World War 1. Ten Identified Australian Fromelles soldiers are commemorated here. The cemetery reflects the heavy toll of the war on the region and includes graves of soldiers who died in the nearby trenches during the early years of the war. It also is notable for its historical significance and connection to the military hospitals in St Omer. In total, there are 2,907 soldiers buried in this cemetery.
| Unit | No. | Rank | Surname | Forenames | Fate | Date |
|---|---|---|---|---|---|---|
| 53 Bn | 3004 | Pte | Aysom | Frank Herbert | DOW | 20th July 1916 |
| 58 Bn | 4442 | Pte | Bowden | Ernest | DOW | 22nd July 1916 |
| 59 Bn | 1742 | Pte | Gibson | Alfred Lewis | DOW | 21st July 1916 |
| 58 Bn | 1770 | Pte | Grundy | Albert | DOW | 18th July 1916 |
| 58 Bn | 3159 | Pte | Keen | George Culverwell | DOW | 25th August 1916 |
| 30 Bn | 2512 | Pte | Laing | David | DOW | 27th July 1916 |
| 58 Bn | 3118 | Pte | Millich | Thomas Como | DOW | 23rd July 1916 |
| 58 Bn | 2647 | Pte | Morphett | George Henry | DOW | 25th August 1916 |
| 58 Bn | 3126 | Pte | Partridge | Sydney Carton | DOW | 1st September 1916 |
| 31 Bn | 1604 | Pte | Rodda | Benjamin Patrick | DOW | 26th July 1916 |