Lest we forget: The animals who stood by our men and women.

While April 25 is a day of national remembrance for Australians and New Zealanders who served and gave their lives in times of conflict, peacekeeping operations and war, there’s a lesser known story we don’t always tell on ANZAC Day.

That of the service animals who stood alongside our men and women – many of whom never made it home.

More than 16 million animals served during the First World War, including cats, dogs, horses, birds, camels and mules. They were mascots, provided comfort, carried messages, transported wounded soldiers to safety, and were instrumental in moving large quantities of ammunition, food and water, and medical supplies.

Images from the Australian War Memorial immortalise the loyalty and sacrifice of these animals. These are just a tiny glimpse into the way they supported their battalions.

Why women will be marching up the front this Anzac Day. Post continues after audio.

Animals continued to play a crucial role for the Australian Army long after the First World War.

Today, let's remember that service comes in many different forms.