Use "militated" in a sentence

1. 29 His underweight militated against his ever becoming a good sprinter.

2. ‘Convection is militated against by the large-scale geometry of the layering, which dips Concentrically towards the centre of the granite and is incompatible with the existence of convection cells.’

3. The national heroes, who include former political figures, labour leaders, a slave, a sportsman and an abolitionist widow, militated against the racial, economic and social inequality that existed during their respective eras.