NACB ~ Navy & Army Canteen Board

NAUL ~ National Amalgamated Union of Labour

NB Co ~ North British Locomotive Company Ltd

NBL ~ North British Locomotive Company Ltd

NBL Co ~ North British Locomotive Company Ltd

NCC ~ Non-Combatant Corps

NCO ~ Non-Commissioned Officer

NEC ~ National Expenditure Committee

NF ~ Northumberland Fusiliers

NFF ~ National Filling Factory (Ministry of Munitions)

NFF ~ Nyasaland Field Force (East Africa)

NHB ~ Nairobi Howitzer Battery (East Africa)

NID ~ Naval Intelligence Department

NIH ~ North Irish Horse

NIV ~ Not in Vocabulary

NLH ~ Natal Light Horse (India)

NME ~ Non-military Employment (Australian post-Armistice)

NPD ~ Northern Petrol Depot

NPF ~ National Projectile Factory

NS ~ Naval Service

NSF ~ National Shell Factory (Ministry of Munitions)

NSO ~ Naval Store Officer

NSR ~ Nova Scotia Regiment (Canada)

NSY ~ North Somerset Yeomanry

NT ~ Night Tracer (munitions)

NTO ~ Naval Transport Officer

NUWSS ~ National Union of Women's Suffrage Societies

NWL ~ Normal Water Level

NWP ~ National Waste Production

NYD ~ Not Yet Diagnosed (medical)

NYDN ~ Not Yet Diagnosed Nervous (medical - shellshock)

NZ ~ New Zealand

NZASC ~ New Zealand Army Service Corps

NZASP ~ New Zealand Ammunition Sub Park