Divisions: Collegiate, Varsity, Junior Varsity, Middle School, Family
Competition Type: Individual, 400 Question Multiple Choice Exam, Counts 1/3 towards Individual Olympiad Championship (1/4 for towards Collegiate Division Championship)
This is a required event for all competing students.

The Battery is the only required individual event at the Olympiad, as it is used to seed the teams. It also counts towards the individual Olympiad Championship. The Battery, however, is also an event in its own right, with 400 multiple choice questions on all aspects, eras, and places in history. The Battery will be one of the first events at the Olympiad.

As mentioned, the Battery is used to determine the composition of National and State teams for the team events at the Olympiad. The teams for the Collegiate Division may be determined on a different basis.

Normally, the top three students from a country or state will form the A Team for that country or state, the next top three scoring students will form Team B and so on per age group. However, some teams may consist of just two students due to the need for rounding, while solo students will be paired up either with a higher age division within one’s country or state or with students from a different country or state. Solo teams will not be permitted.

2018 Champions
Varsity: Hari Parameswaran, India
Junior Varsity: Govind Prabhakar, India
Middle School: Siddharth Kamannavar, California
Family: Henry Howe, Virginia

2016 Champions
Varsity: Jakob Myers, Illinois
Junior Varsity: Vijay Siddharth, Singapore
Middle School: Enzo Cunanan, Florida

2015 Champions
Varsity: Bruce Lou, California
Junior Varsity: Jonathan Tran, Oregon
Middle School: Vijay Siddharth, Singapore

Distribution Specifications:

400 total

40 US (including colonial period)

50 Europe (until 1648)

50 Europe (since 1648)

40 Other Americas (Canada, Latin America, Caribbean)

40 Africa (including Ancient Egypt, Carthage, etc.)

20 Australia / New Zealand / Oceania

30 China
30 South Asia (India, Pakistan, Nepal, Bangladesh, Sri Lanka, Bhutan)
30 East Asia / Southeast Asia
40 Middle East (including ancient) / Central Asia
30 Any / Mixed / Other