Possible Clues:

• Confinement as a precautionary measure
• Detention of nationalist leader interrupts funeral
• Engraving captures new imposition on alien
• Wartime restriction beginning and ending with international agreement
• Committal having alien finally confined
• I note "bird", as they say, signified "incarceration"
• Old test for lads in bottom line leads to detention
• Confinement of an enemy national
• Precautionary measure, holding funeral without name
• We hear one after another intended to get detention