Uhud and the deployment of troops

وَإِذْ غَدَوْتَ مِنْ أَهْلِكَ تُبَوِّئُ ٱلْمُؤْمِنِينَ مَقَٰعِدَ لِلْقِتَالِ ۗ وَٱللَّهُ سَمِيعٌ عَلِيمٌ

Remember that morning Thou didst leave Thy household (early) to post the faithful at their stations for battle: And Allah heareth and knoweth all things: