But I was Looking at the Permanent Stars
Bugles sang, saddening
Owen personifies military instruments as 'singing'—a word suggesting beauty or life—then immediately undercuts it with 'saddening.' The contradiction sets the poem's strategy: war corrupts even sounds that should be noble.
Sleep mothered them
Sleep is personified as maternal comfort, but it's offered to boys—a detail that invokes child soldiers or the youth of soldiers. The tenderness of 'mothered' makes the context more disturbing, not less.
Monstrous anger / taciturn guns
'Taciturn' means silent or reserved, but guns aren't quiet—they roar. Owen uses the word ironically: the guns' silence before firing is more terrible than noise. Their 'monstrous anger' is the violence they contain.
Majesty of the insults
A paradox: 'majesty' suggests dignity and power, but it modifies 'insults'—degradation. Owen fuses opposites to capture how industrial war weaponizes beauty itself. The guns' mouths 'insult' by destroying.