Trained at Wanganui Public Hospital from 1905 to 1908, Vida MacLean served during both World Wars and contributed to the health, healing and welfare of many people in many places.
At the outbreak of war in November 1914, hundreds of nurses from all over the country volunteered for war service, keen to "do their bit for New Zealand" and "home", which was how Britain was viewed by settler descendants in New Zealand at the time.
In August 1914, attached to the New Zealand Expeditionary Force, Sister MacLean sailed on the SS Monowai to Samoa, then occupied by German troops. In Apia, she set up facilities for the treatment of sick and wounded. After returning home in March 1915 with most of the NZ troops, she joined 50 nurses leaving for the larger theatres of war with the New Zealand Army Nursing Service. She served at the New Zealand Hospital in Cairo, running the isolation block that dealt with infectious diseases, which were rampant amongst the sick and wounded New Zealand servicemen serving in the Middle East.
Vida was mentioned in dispatches twice, in 1916 and 1918. Nurses proved their worth at the front and in the large hospitals that cared for the thousands and thousands of wounded and ill. Her 1916 certificate recorded, "Sister Vida McLean [sic, Nursing Service was mentioned in a Despatch ... for gallant and distinguished services in the Field." She was awarded the Royal Red Cross First Class in 1918.