It's a Cold War-era, troop-carrying infantry fighting vehicle (IFV), designed to keep mechanised battlegroups up to speed with their fast-moving tanks.
Ukraine is set to receive a number of German Marder vehicles to help in its fight against Russia's invasion.
But what is the Marder and how will it help on the ground in Ukraine?
The German Marder entered service in 1971 but has received constant upgrades since.
The different variants weigh between 28 and 37 tonnes, they can travel at up to 47mph, have a range of 320 miles and need a crew of three but can carry six troops.
The Marder can also travel through deep waters.
The IFVs are part of a wider push from international defence to give Ukraine land vehicles that fall just short of tank classification but can defeat Russian tanks.
While the incoming US Bradley has got TOW missiles and the French AMX-10 has a 105mm gun, Germany's Marders are fitted with a MILAN anti-tank missile launcher – using line-of-sight guidance that sees most variants effective up to 2,000 metres.
It also comes with a primary 20mm autocannon with more than 1,000 rounds and a secondary machine-gun with 5,000 rounds.
The Marder has been combat tested in Afghanistan and was deployed on peacekeeping duties in Kosovo.