page_title: Glossary of British ordnance terms
section_title: HA
hierarchical_section_title: Glossary of British ordnance terms / HA
caption_attribution_description: English: Photograph showing two RAN sailors, S3207 Able Seaman (AB) Percy A Tipper (left) and 23424 AB Cecil A Dobell (right), with HA (high-angle, i.e. anti-aircraft) QF 4-inch Mk V gun, on HMAS Canberra.
context_page_description: The terms may have slightly different meanings in the military of other countries.
context_section_description: High angle: a naval designation equivalent to AA (anti aircraft), for a gun mounting which was capable of an elevation exceeding 50° from the horizontal, allowing the gun to be used against aircraft.
caption: Gunners with HA QF 4-inch MK V gun on HMAS Canberra c. 1940
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