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  | Puriata River |
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  | Rabaul Area |
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  | Ramu River |
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  | 112th Line Of Communication Field Hospital (Japanese) |
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 | 18th Army 20th Div (Japanese) |
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  | 18th Army 51st Div (Japanese) |
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 | 20th Division 79th Infantry Regt 67th Coy (Japanese) |
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  | 20th Division 79th Infantry Regt (Japanese) |
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 | 20th Division Infectious Disease Prevention and Water Supply Unit Sanitation Group (Japanese) |
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  | 39th Independent Motor Car Bn (Japanese) |
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 | Ramu River Guard (Japanese) |
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   | Ramu River–Finisterre Range |
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  | Ramu River Finisterre Range |
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  | Sag Sag |
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  | Saipa |
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  | Sanananda |
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  | Sansapor |
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  | Sarmi |
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  | Sentani |
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  | Seram Sea |
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