将校は今後夕食の席ではネクタイを着用すべし。

tbd

Officers will henceforth wear ties at dinner.

困難を省みず前進すべし。

tbd

You should try to make your way despite all the difficulties.

なんじの隣人をおのれのごとく愛すべし。

tbd

Thou shalt love thy neighbour as thyself.

You shall love your neighbor as yourself.

ただちに、その計画を実行すべし。

tbd

We must carry out the plan at once.

この法律は日本において有効とすべし。

tbd

This law shall have effect in Japan.