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  2. Civil defense in the United States - Wikipedia

    en.wikipedia.org/wiki/Civil_defense_in_the...

    Civil defense truly began to come of age, both worldwide and in the United States, during the first World War—although it was usually referred to as "civilian defense". This was the first major total war , which required the involvement and support of the general population.

  3. Tower defense - Wikipedia

    en.wikipedia.org/wiki/Tower_defense

    Tower defense (TD) is a subgenre of ... 2019) and Tower Defense X (John Roblox, 2023), as well as the first famous one being Tower Battles (Planet3arth, 2017). These ...

  4. Earth Defense Force - Wikipedia

    en.wikipedia.org/wiki/Earth_Defense_Force

    Earth Defense Force has roughly five separate continuities as of 2024. However, in general, all entries in the series share a similar basic premise, following the Earth Defense Force (EDF), a specialized multinational defense force established and supported by every country and staffed by the world's militaries, tasked with defending Earth and humanity from external threats.

  5. Queen's Gambit Accepted - Wikipedia

    en.wikipedia.org/wiki/Queen's_Gambit_Accepted

    The old main line 7.Qe2 allows ...b5, and theory holds that Black can equalise against it. The main modern preference is the retreat 7.Bb3, so that 7...b5 can be met with 8.a4, while 7.a4, stopping ...b5 at the cost of weakening the b4-square, is also popular, and was played by Mikhail Botvinnik in his 1963 match with Tigran Petrosian .

  6. Ruy Lopez - Wikipedia

    en.wikipedia.org/wiki/Ruy_Lopez

    The Møller Defence, 3...a6 4.Ba4 Nf6 5.0-0 Bc5 was already an old line in 1903 when Jørgen Møller (1873–1944) analysed it in Tidskrift för Schack. Alexander Alekhine played this for Black in the early portion of his career; despite his advocacy, it never achieved great popularity, and even he eventually came to consider it dubious.

  7. Interior lines - Wikipedia

    en.wikipedia.org/wiki/Interior_lines

    Interior lines [a] (as opposed to exterior lines) is a military term, derived from the generic term line of operation or line of movement. [1] The term "interior lines" is commonly used to illustrate, describe, and analyze the various possible routes (lines) of logistics, supply, recon, approach, attack, evasion, maneuver, or retreat of armed forces.

  8. Roblox - Wikipedia

    en.wikipedia.org/wiki/ROBLOX

    Roblox occasionally hosts real-life and virtual events. They have in the past hosted events such as BloxCon, which was a convention for ordinary players on the platform. [98] Roblox operates annual Easter egg hunts [99] and also hosts an annual event called the "Bloxy Awards", an awards ceremony that also functions as a fundraiser. The 2020 ...

  9. Three lines of defence - Wikipedia

    en.wikipedia.org/?title=Three_lines_of_defence&...

    This page was last edited on 21 December 2022, at 10:50 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.