Question: What was the duration of the war that was in progress when the USS McAnn first served in the Atlantic Ocean?

<P0-S0> The 2012 Atlantic hurricane season was the final year in a consecutive string of three hyperactive seasons, although most of the storms were weak. <P0-S1>  It is tied with 1887, 1995, 2010, and 2011 for having the third-most named storms on record. <P0-S2>  It was also the second-costliest season, behind 2005. <P0-S3>  The season officially began on June 1 and ended on November 30, dates that conventionally delimit the period during each year in which most tropical cyclones form in the Atlantic Ocean. <P0-S4>  However, Alberto, the first system of the year, developed on May 19 – the earliest date of formation since Tropical Storm Ana in 2003. <P0-S5>  A second tropical cyclone, Beryl, developed later that month. <P0-S6>  This was the first occurrence of two pre-season named storms in the Atlantic basin since 1951. <P0-S7>  It moved ashore in North Florida on May 29 with winds of 65 mph (100 km/h), making it the strongest pre-season storm to make landfall in the Atlantic basin. <P0-S8>  This season marked the first time since 2009 where no tropical cyclones formed in July. <P0-S9>  Another record was set by Hurricane Nadine later in the season; the system became the fourth-longest-lived tropical cyclone ever recorded in the Atlantic, with a total duration of 22.25 days. <P0-S10>  The final storm to form, Tony, dissipated on October 25 – however, Hurricane Sandy, which formed before Tony, became extratropical on October 29. <SEP> <P1-S0>  It involved the vast majority of the world's countries—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis. <P1-S1>  It was the most widespread war in history, and directly involved more than 100 million people from over 30 countries. <P1-S2>  In a state of total war, the major participants threw their entire economic, industrial, and scientific capabilities behind the war effort, erasing the distinction between civilian and military resources. <P1-S3> World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier. <SEP> <P2-S0> USS "McAnn" (DE-179) was a "Cannon"-class destroyer escort built for the United States Navy during World War II. <P2-S1>  She served in the Atlantic Ocean and provided escort service against submarine and air attack for Navy vessels and convoys. <SEP> <P3-S0> The Spirit of Butts' Farm (also known as TAM 5) was the first model aircraft to cross the Atlantic Ocean on August 11, 2003. <P3-S1>  The aircraft was launched from Cape Spear near St. John's, Newfoundland and Labrador, and landed at Mannin Beach near Clifden, Ireland 38.9 hours later. <P3-S2>  It was recognized by the FAI as a double world record flight for its duration of 38h 52 min 19 sec and straight-line distance of 1881.6 mi using an autopilot, and using the Argos System for telemetry to track the flight's progress; the team's use of technology also spurred the FAI to create new record categories. <P3-S3>  The aircraft was controlled by autopilot for >99% of the flight in a manner similar to that used by the Insitu Aerosonde UAV "Laima" that crossed the Atlantic in 1998. <P3-S4>  The flight used 99.2% of its fuel and left only 1.5 USfloz (or 44 minutes of flight time) remaining when it reached its destination.