The troops concerned were drawn from the navy and hence were either 'marins' (sailors) or 'matelots' (seamen). The 44th Bataillon de Flotille along with the Battalion of the Danube were employed in Austria in 1809. The Battalion of the Danube was a battalion of naval artificers (ouvriers militaires de la marine sometimes known as ouvriers militaires du genie maritime) was formed from companies of ouvriers militaires who worked at the large naval bases. Their officers were taken from the naval construction engineers and from the artillerie de la marine. The 44th was taken from sailors/seaman. These troops employed for service with the Grande Armee because many of the army's engineers were in Spain and both were commanded by Capitaine de Vaisseau Baste. They were employed building bridges, boats, a floating battery, and landing craft and were also employed in combat along the Danube in raids and reconnaissances and they helped in bridging the Danube in the second Danube crossing along with taking troops across the river to cover the crossing. They also manned the gunboats that covered the crossing along with organizing and operating the water transport system on the Danube.
Overall, the navy supplied troops to the Grande Armee who served as infantry, artillerymen, and engineers and were employed in the campaigns of 1809, 1812, 1813, and 1814 as well as in Spain. They were jacks of all trades and masters of most and served long and well.