「頭、右!」の号令で隊員が一斉に右を向いた。
At the command "Eyes right!" the troops all turned their heads to the right.
十歳の長男を頭に、三人の子供がいる。
They have three children, the eldest a ten-year-old boy.
七十歳の長兄を頭に、五人の兄弟が集まった。
Five siblings gathered, the eldest a seventy-year-old brother.