land-based upper layer (LBUL)

Sea-Based Upper Layer (SBUL)

land-based lower layer (LBLL)

upper layer

upper-air layer

Sea-Based Lower Layer (SBLL)

land-based ICBM force

land-based missile

land-based missile system

land-based mobile missile system

land-based naval air forces

land-based tactical air forces

no man's land / no-man's land

upper air fallout

upper deck

upper sideband (USB)

upper glacis plate

adjustable upper sling swivel

upper ball race

upper center crankshaft bearing

upper edge of front sight

upper front crankshaft bearing

upper front plate

upper hemisphere

upper insulator gasket

upper motor lubricant

upper proximity dot (of a gyro gunsight)

upper rear crankshaft bearing

upper sling swivel

upper tank

upper time ring

upper water tank

upper bearing