838

838 in variouscalendars
Gregorian calendar	838; DCCCXXXVIII
Ab urbe condita	1591
Armenian calendar	287; ԹՎ ՄՁԷ
Assyrian calendar	5588
Balinese saka calendar	759–760
Bengali calendar	245
Berber calendar	1788
Buddhist calendar	1382
Burmese calendar	200
Byzantine calendar	6346–6347
Chinese calendar	Đinh TịNăm (FireSnake); 3535 or 3328; — to —; Mậu ngọ năm (EarthHorse); 3536 or 3329
Coptic calendar	554–555
Discordian calendar	2004
Ethiopian calendar	830–831
Hebrew calendar	4598–4599
Hindu calendars
-Vikram Samvat	894–895
-Shaka Samvat	759–760
-Kali Yuga	3938–3939
Holocene calendar	10838
Iranian calendar	216–217
Islamic calendar	223–224
Japanese calendar	Jōwa5; ( thừa cùng ５ năm )
Javanese calendar	734–736
Julian calendar	838; DCCCXXXVIII
Korean calendar	3171
Minguo calendar	1074 beforeROC; Dân trước 1074 năm
Nanakshahi calendar	−630
Seleucid era	1149/1150AG
Thai solar calendar	1380–1381
Tibetan calendar	Âm hỏa xà năm; (female Fire-Snake); 964 or 583 or −189; — to —; Dương thổ mã năm; (male Earth-Horse); 965 or 584 or −188

Millennium:	1st millennium
Centuries:	8th century; 9th century; 10th century;
Decades:	810s; 820s; 830s; 840s; 850s;
Years:	835; 836; 837; 838; 839; 840; 841;

Year838(DCCCXXXVIII) was acommon year starting on Tuesday(link will display the full calendar) of theJulian calendar.

Events

July 22–Battle of Anzen:Caliphal-Mu'tasimlaunches a major punitive expedition against theByzantine Empire,targeting the two major Byzantine fortress cities of centralAnatolia(AncyraandAmorium). He mobilises a vast army (80,000 men) atTarsus,which is divided into two main forces. The northern force, under commanderal-Afshin,invades theArmeniac Themefrom the region ofMelitene,joining up with the forces of the city's emir,Umar al-Aqta.The southern, main force, under al-Mu'tasim, passes theCilician GatesintoCappadocia.EmperorTheophilosattacks theAbbasids,inflicting 3,000 casualties, but is heavily defeated by a counter-attack of 10,000 Turkishmounted archers.Theophilos and his guard are encircled, and barely manage to break through and escape.^[1]^[2]^[3]
August–Siege of Amorium:The Abbasids besiege the Byzantine fortress city ofAmorium,which is protected by 44 towers, according to the contemporary geographerIbn Khordadbeh.Both besiegers and besieged have manysiege engines,and for several days both sides exchange missile fire. However, a Muslim prisoner defects to al-Mu'tasim, and informs him about a place in the wall which has been badly damaged by heavy rainfall. The Abbasids concentrate their hits on this section, and after two days manage to breach thecity wall.After two weeks of repeated attacks, the Byzantine defenders surrender. The city is sacked and plundered, 70,000 inhabitants are slaughtered, and the survivors are sold asslaves.

December 13– KingPepin I of Aquitainedies after a 21-year reign. EmperorLouis the Piousappoints his youngest sonCharles the Baldas his successor. The Aquitainiannobility,however, elects Pepin's sonPepin IIas the newFrankishruler.
The oldest known mention is made of the city ofRheine,on theEms River(modernGermany).

Battle of Hingston Down:Ecgberht, King of Wessex,leads his men to defeat a combined force ofCornishand DanishVikingsatHingston DowninCornwall.^[4]
KingFedelmid mac CrimthainnofMunstercalls for a great royal meeting atKildare(Cluain-Conaire-Tommain) between himself and KingNiall CailleofUí Néill.^[5]
Approximate date – TheStone of Destiny,an oblong block of redsandstone,is placed atScone Palacefor thecoronationof the firstmonarchs of Scotland.

January –Babak Khorramdin,an Iranian military leader, is brutally executed by order of al-Mu'tasim.^[6]
A conspiracy is discovered, led by GeneralUjayf ibn Anbasa,to assassinate al-Mu'tasim while he is campaigning, and place his nephewAl-Abbas ibn al-Ma'munon the throne. A widespread purge of the army follows, which cements the leading role of theTurkishslave-soldiers (ghilman) in the Abbasid military establishment. Ujayf is executed and Al-Abbas put in prison, where he dies.
TheYazidisrise up against the Abbasids (approximate date).^[7]

^Treadgold 1997, p. 441.
^Haldon 2001, p. 80.
^Kiapidou 2003, Chapter 1.
^Charles-Edwards, pp. 428–31; Padel, "Cornwall", Davies, p. 342; Stenton, p. 235.
^Annals of Inisfallen,838. Seán Mac Airt, The Annals of Innisfallen Dublin: 1951 available atUCC Celt Website.
^The Golden Age of Islamby Maurice Lombard, p. 152.ISBN 1-55876-322-8.
^M. Th. Houtsma, 1993, E. J. Brill's First Encyclopaedia of Islam, 1913-1936: Volume 4 - p. 1136, Brill.