Marbot says Lannes was sitting down mourning the death of a friend, who had been hit by a spent shot in the head. Austrian artillery fire was falling all around. Major attacks had stopped by this time. Lannes was hit where his legs were crossed. One was amputated and became infected. Lannes died days later. Marbot tells a good story but may not be accurate. Early on he states that the siege of Genoa kept Ott’s corps from getting to Marengo. Every account of Marengo I’ve seen has Ott’s corps on the Austrian left flank at that battle. I took that as a sign.