Puzzle 19: Lest We Forget

Visual clue. Every stamp prominently features bright scarlet poppy petals and blossoms.

The hook. The red poppy is the international symbol of remembrance inspired by the World War I poem 'In Flanders Fields'.

Visual clue. Each stamp depicts a stone cenotaph, pillar, or sculpted war memorial standing tall.

The hook. These monuments were erected in Canada, Newfoundland, and the Soviet Union to commemorate the service and sacrifice of fallen soldiers.

Visual clue. All four stamps show naval vessels, fleet reviews, and aircraft carriers sailing on open water.

The hook. These stamps honor naval forces and historic fleet reviews from Gibraltar and India.

Here's the trap we set. Three of these stamps feature military planes or jets flying overhead, baiting players into searching for a non-existent 'Military Aircraft' category instead of recognizing that all four show naval warships.

Visual clue. Each stamp depicts living military veterans: in wheelchairs, in combat helmets, at reunions, and receiving flowers.

The hook. Veterans Day and remembrance observances honor former military personnel across generations and nations.

Here's the trap we set. The elderly veterans in one stamp hold flowers, which can tempt players to place it in the poppy category. Looking beyond surface details reveals the living human service members being honored.